package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.client.HttpClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

@Service
@Slf4j
public class UserServiceImpl implements UserService {

    public static final String WX_LOGIN = "https://api.weixin.qq.com/sns/jscode2session";
    @Autowired
    WeChatProperties properties;

    @Autowired
    UserMapper userMapper;

    @Override
    public User wxlogin(UserLoginDTO userLoginDTO) {
        //调用微信接口服务，获得当前微信用户的openid
        Map<String, String> params = new HashMap<String, String>();
        params.put("appid",properties.getAppid());
        params.put("secret",properties.getSecret());
        params.put("grant_type","authorization_code");
        params.put("js_code",userLoginDTO.getCode());
       String json= HttpClientUtil.doGet(WX_LOGIN,params);
       JSONObject jsonObject= JSON.parseObject(json);
       String openid=jsonObject.getString("openid");

        //判断openId是否为空
         if(openid==null){
             throw new LoginFailedException(MessageConstant.LOGIN_FAILED);
         }
        //判断当前用户是否为新用户
        User user=userMapper.getByOpenId(openid);
         if(user==null){
             user=User.builder()
                     .openid(openid)
                     .createTime(LocalDateTime.now())
                     .build();
             userMapper.insert(user);

         }
        //如果是自动完成注册

        //返回这个用户对象
        return user;
    }
}
